山西霍山油松群落的数量分类研究

Study on Numerical Classification of the P. Tabulaeformis Communites in Huoshan Mountain of Shanxi

以霍山七里峪景区油松群落为研究对象,在野外调查的基础上,典型取样60个,采用双向指示种分析法对油松群落划分群丛,结果表明:该群落共有物种55个,隶属于22科,48属.根据物种重要值的统计,绣线菊和羊胡子草在该群落中占绝对优势,是灌木层和草本层的优势种,重要值分别是0.465和0.661.根据双向指示种分析法数量分类结果,可将油松群落60个样方划分为16个群丛.根据生态学意义,可将16个群丛合并为8个群落类型.

Using the sampling method, P. tabulaeformis community between 1 600 m and l 800 m was investigated. Species composition was analyzed, and the common species important value was measured. With Two-way Indicator Species Analysis, the community was classified. The results show that the community is composed of 55 species, belonging to 22 families and 48 genera. According to the statistics of species important value, important value of Spiraea pubescens Turcz and Bothriochloa ischemum is 0. 465 and 0. 661 relatively, and in the shrub layer and herb layer the two species are absolute dominant. According to the result of TWINSPAN, 60 samples were classified 16 associations which composed 8 community types.